Math, asked by Rupshanta032, 4 months ago

(3m - n)2 – (m - 2n)2

Answers

Answered by Debanika

2

Answer:

4m-2n

Step-by-step explanation:

(3m - n)2 – (m - 2n)2

= 6m -2n-2m+4n

= 4m-2n

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